Acoustic panels and the like
US6321871A · kind A · utility
14Cited by
4References
5Claims
0Family size
Inventor
Key dates
| Filing date | Mar 17, 2000 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | Mar 17, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B2001/8452
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An acoustic panel is constructed of a rectangular frame (1). A first face of the panel is covered by a membrane (2) which is at least substantially transparent to audio frequency sound waves. The interior of the frame (1) behind the membrane (2) includes sound absorbent material (5). The second face of the panel is covered by a closure member (4) which is opaque to audio frequency sound waves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.